[turbofan] Introduce new Select operator to improve bounds checking.

test/unittests/compiler/node-test-utils.h

Index: test/unittests/compiler/node-test-utils.h
diff --git a/test/unittests/compiler/node-test-utils.h b/test/unittests/compiler/node-test-utils.h
index f277a10dc9ac7c3fbca9e8c9e7bfd6a1dd51245f..da05a108e5ef921524ab779f80b364737e80302c 100644
--- a/test/unittests/compiler/node-test-utils.h
+++ b/test/unittests/compiler/node-test-utils.h
@@ -48,6 +48,10 @@ Matcher<Node*> IsFloat64Constant(const Matcher<double>& value_matcher);
 Matcher<Node*> IsInt32Constant(const Matcher<int32_t>& value_matcher);
 Matcher<Node*> IsInt64Constant(const Matcher<int64_t>& value_matcher);
 Matcher<Node*> IsNumberConstant(const Matcher<double>& value_matcher);
+Matcher<Node*> IsSelect(const Matcher<MachineType>& type_matcher,
+                        const Matcher<Node*>& value0_matcher,
+                        const Matcher<Node*>& value1_matcher,
+                        const Matcher<Node*>& value2_matcher);
 Matcher<Node*> IsPhi(const Matcher<MachineType>& type_matcher,
                      const Matcher<Node*>& value0_matcher,
                      const Matcher<Node*>& value1_matcher,
@@ -69,6 +73,8 @@ Matcher<Node*> IsNumberLessThan(const Matcher<Node*>& lhs_matcher,
                                 const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsNumberSubtract(const Matcher<Node*>& lhs_matcher,
                                 const Matcher<Node*>& rhs_matcher);
+Matcher<Node*> IsNumberMultiply(const Matcher<Node*>& lhs_matcher,
+                                const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsLoadField(const Matcher<FieldAccess>& access_matcher,
                            const Matcher<Node*>& base_matcher,
                            const Matcher<Node*>& effect_matcher,